EP1055523B1 - Spitzenmechanismus für Druckknopfschreibgeräte - Google Patents

Spitzenmechanismus für Druckknopfschreibgeräte Download PDF

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Publication number
EP1055523B1
EP1055523B1 EP99117434A EP99117434A EP1055523B1 EP 1055523 B1 EP1055523 B1 EP 1055523B1 EP 99117434 A EP99117434 A EP 99117434A EP 99117434 A EP99117434 A EP 99117434A EP 1055523 B1 EP1055523 B1 EP 1055523B1
Authority
EP
European Patent Office
Prior art keywords
ball
tip
elastic member
pressing part
ink
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99117434A
Other languages
English (en)
French (fr)
Other versions
EP1055523A1 (de
Inventor
Kim Chung-Kyung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dong A Pencil Co Ltd
Original Assignee
Dong A Pencil Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dong A Pencil Co Ltd filed Critical Dong A Pencil Co Ltd
Publication of EP1055523A1 publication Critical patent/EP1055523A1/de
Application granted granted Critical
Publication of EP1055523B1 publication Critical patent/EP1055523B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
    • B43K5/02—Ink reservoirs
    • B43K5/04—Ink reservoirs flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K1/00—Nibs; Writing-points
    • B43K1/08—Nibs; Writing-points with ball points; Balls or ball beds
    • B43K1/086—Nibs; Writing-points with ball points; Balls or ball beds with resilient supporting means for the ball, e.g. springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K1/00—Nibs; Writing-points
    • B43K1/08—Nibs; Writing-points with ball points; Balls or ball beds

Definitions

  • the present invention relates to a tip mechanism for a knock-type ballpoint pen and, more particularly, to a tip mechanism for a knock-type ballpoint pen which can perform a ball pressurizing function in an appropriate manner.
  • ballpoint pens make use of water gel ink or oil gel ink which has a high viscosity at a static state but has a reduced viscosity at writing with the application of shearing force through rotation of the ball.
  • Such ballpoint pens are classified into a tip covering type of exposing a tip portion to the outside with a separate tip cover at all times and a knock type of exposing the tip portion to the outside only at writing without the separate tip cover.
  • the usual knock-type ballpoint pen includes a barrel-shaped case with a one-sided conical portion and an opposite sided knocking member, an ink storing tube disposed within the barrel-shaped case, and a tip mechanism with a ball positioning end and an opposite end inserted into the ink stroring tube.
  • the tip mechanism is provided with a small metal ball and an elastic member for pressurizing the ball.
  • a coil spring is used for the elastic member with a linearly extended ball-pressing portion which is adapted to the narrow space of an ink guide hole.
  • the linearly extended ball-pressing portion conventionally has a diameter of 0.1 ⁇ 0.3mm. Therefore, the ball-pressing portion is formed with a sharply pointed shape which is liable to intervene rotation of the ball and scratch or crack an external surface of the ball. This prevents the ball from smoothly rolling with a fluent ink flowing and causes ink spot at writing or disconnected portions at line drawing.
  • the present invention is directed to a tip mechanism for a knock-type ballpoint pen which substantially obviates one or more of the problems due to limitations and disadvantages of the related art.
  • An object of the present invention is to provide a tip mechanism for a knock-type ballpoint pen which can perform the ball pressurizing function with a suitably processed ball pressing part without friction loss of the ball.
  • the tip mechanism for a knock type ballpoint pen with an ink container includes a tip body having an inner ink-guide hole and top and bottom end portions. The top end portion of the tip body is fitted within the ink container. A ball receptor is formed at the bottom end portion of the tip body. A ball is disposed in the ball receptor to be rotated. The ball is partially exposed to the outside.
  • An elastic member is inserted into the ink-guide hole of the tip body. The elastic member has a ball pressing part for pressing the ball toward the outside.
  • the ball pressing part is formed with a curved shape or a triangle or trapezoid shape. The shape of the ball pressing part is processed by bending the ball pressing part at a predetermined angle.
  • Figs. 1 to 3 illustrate a tip mechanism for knock-type ballpoint pens according to a first preferred embodiment of the present invention.
  • the tip mechanism is provided with a tip body 10 with a stepped top portion onto which an ink container 2 is partially inserted.
  • the tip body 10 has an internal ink-guide hole 15 with a relatively narrow bottom opening portion and a relatively wide top opening portion.
  • the tip body 10 is outlined roughly with conical shaped inner and outer surfaces.
  • a ball 30 is inserted into the ink-guide hole 15 through the bottom opening portion of the tip body 10 and an elastic member 20 is inserted into the ink-guide hole 15 through the top opening portion.
  • the bottom opening portion of the tip body 10 has a diameter smaller than that of the ball 30 such that the ball 30 once inserted into the ink-guide hole 15 does not escape therefrom.
  • a plurality of protrusions 14 are formed at the inner surface of the tip body 10 slightly over the bottom opening portion to form a ball receptor 16 for receiving and holding the ball 30 on the one hand and to form narrow ink-guide grooves 13 on the other. It is preferable that the number of the protrusions 14 is preferably three to five.
  • the ball receptor 16 is formed with a shape corresponding to that of the ball 30.
  • a fixture ring 19 is mounted at the top opening portion of the ink-guide hole 15 to keep the elastic member 20 within the ink-guide hole 15.
  • the elastic member 20 may be stuck in the ink-guide hole 15 by narrowing the top opening portion or making inner protrusions at the top opening portion.
  • the elastic member 20 is formed with a coiling portion 22, a straight lined portion 24 and a vertically bent portion 23 interconnecting the coiling portion 22 and the straight lined portion 24. These three portions 22 to 24 are incorporated into one body.
  • the straight lined portion 24 has a middle side with a predetermined length and a free end side bent by 180° from the middle side.
  • the bent position of the straight lined portion 24 forms a curved outer surface contacting the ball 30 which is referred to hereinafter as a ball pressing part with a reference numeral 25.
  • the free end side of the straight lined portion 24 has an inclined end portion 26 which is to fluently guide flow of ink.
  • the ball pressing part 25 contacts the ball 30 contained in the ball receptor 16 to press it toward the bottom opening portion of the tip body 10.
  • Figs. 4 and 5 illustrate an elastic member of a tip mechanism for knock-type ballpoint pens according to a second preferred embodiment of the present invention.
  • the straight lined portion 24 of the elastic member 20 is double-sided centering the coiling portion 22. With this structure, it becomes possible to insert either side of the elastic member 20 into the ink-guide hole 15 through the top opening portion of the tip body 10. This is to consider that since the length of the elastic member 20 is extremely short, i.e., about 8 ⁇ 15mm and the diameter of the coiling portion 22 is about 0.7 ⁇ 1.2mm, the elastic member 20 may be reversely inserted into the ink-guide hole 15 at combination.
  • Fig. 6 illustrates an elastic member of a tip mechanism for knock-type ballpoint pens according to a third preferred embodiment of the present invention.
  • the elastic member 20 is structured to be formed with a double-lined coil spring which is bent at a middle portion. Therefore, the coiling portion 22, the straight lined portion 24 and the vertically bent portion 23 of the elastic member 20 are all double-lined and the straight double-lined portion 24 has a free end bent by 180° from each lined parts toward each other. The bent position of the straight double-lined portion 24 corresponds to the ball pressing part 25.
  • the double-lined spring enhances strength and elasticity of the elastic member 20, it becomes possible to use a relatively short spring for the elastic member 20.
  • Figs. 7 to 9 illustrate an elastic member of a tip mechanism for knock-type ballpoint pens according to a fourth preferred embodiment of the present invention.
  • the straight lined portion 24 is provided with a doubly bent free end part 28 for functioning as the ball pressing part 25.
  • the doubly bent part 28 is formed with a triangle or trapezoid shape. In this structure, the doubly bent part 28 is inserted into the ink guide grooves 13 at double sides so that elastic power can be uniformly exerting for pressing the ball 30.
  • Figs. 10 to 14 illustrate a tip mechanism for a knock-type ballpoint pen with a needle pipe-type tip body according to a fifth preferred embodiment of the present invention.
  • the tip body 40 includes a connecting body 42 with a stepped portion onto which an ink container 2 is partially inserted, and a needle pipe 44 partially inserted into the connecting body 42.
  • the connecting body 42 has an internal ink-guide hole 43 for fluid-communicating with the ink container 2.
  • the needle pipe 44 is provided with a ball receptor 46 which is formed by a plurality of protrusions 44. The protrusions 44 are inwardly protruded by externally pressing a free end portion of the needle pipe 44.
  • the number of the protrusions is three or four. It is also possible that the number of the protrusions is two or, five or more.
  • the coil spring according to the first preferred embodiment is used for the elastic member 20
  • the coil springs according to the second and third preferred embodiment may be used for the same purpose.
  • the coil spring according to the fourth preferred embodiment may be also used for the elastic member 20.
  • the ball pressing part of the coil spring is inserted inbetween the protrusions 45 at double sides so that elastic power can be uniformly exerting for pressing the ball 30.
  • the inventive tip mechanism can perform the ball pressurizing function with the suitably processed ball pressing part without friction loss of the ball.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Switches With Compound Operations (AREA)

Claims (8)

  1. Ein Spitzenmechanismus für Druckknopfschreibgeräte, die einen Tintenbehälter haben, wobei der Spitzenmechanismus folgendes umfasst:
    einen Spitzenkörper, der ein inneres Tintenführungsloch hat, sowie obere und untere Endabschnitte hat, wobei der obere Endabschnitt des Spitzenkörpers innerhalb eines Tintenbehälters eingepasst ist;
    einen Kugelaufnehmer, der an dem unteren Endabschnitt des Spitzenkörpers ausgebildet ist;
    eine Kugel, die innerhalb des Kugelaufnehmers angebracht ist, wobei die Kugel im Kugelaufnehmer drehbar ist und teilweise nach außen ausgesetzt ist; und
    ein elastisches Glied, das im Tintenführungsloch des Spitzenkörpers eingeführt ist, wobei das elastische Glied einen Kugelanpressteil zum drücken der Kugel nach außen hat, dadurch gekennzeichnet, dass der Kugelanpressteil mit einer gekrümmten Form ausgebildet ist, wobei die gekrümmte Form des Kugelanpressteils verarbeitet wird, in dem der Kugelanpressteil an einem vorbestimmten Winkel gebogen wird.
  2. Der Spitzenmechanismus gemäß Anspruch 1, worin der Kugelanpressteil des elastischen Gliedes im wesentlichen um 180° gebogen ist.
  3. Der Spitzenmechanismus gemäß Anspruch 1, worin das elastische Glied einen Windungsabschnitt, einen geradlinigen Abschnitt und einen vertikal gebogenen Abschnitt umfasst, der den Windungsabschnitt und den geradlinigen Abschnitt miteinander verbindet, wobei der Kugelanpressteil am geradlinigen Abschnitt gebildet wird.
  4. Der Spitzenmechanismus gemäß Anspruch 3, worin sowohl der geradlinige Abschnitt als auch der vertikal gebogene Abschnitt jeweils an beiden Seiten des Windungsabschnitts gebildet werden.
  5. Der Spitzenmechanismus gemäß Anspruch 3, worin der Windungsabschnitt, der geradlinige Abschnitt und der vertikal gebogene Abschnitt des elastischen Glieds mit einer doppelten Wickelfeder gebildet werden, die an ihrem mittleren Abschnitt gebogen ist.
  6. Ein Spitzenmechanismus für Druckknopfschreibgeräte, die einen Tintenbehälter haben, wobei der Spitzenmechanismus folgendes umfasst:
    einen Spitzenkörper, der ein inneres Tintenführungsloch hat, sowie obere und untere Endabschnitte hat, wobei der obere Endabschnitt des Spitzenkörpers innerhalb eines Tintenbehälters eingepasst ist;
    einen Kugelaufnehmer, der an dem unteren Endabschnitt des Spitzenkörpers ausgebildet ist;
    eine Kugel, die innerhalb des Kugelaufnehmers angebracht ist, wobei die Kugel im Kugelaufnehmer drehbar ist und teilweise nach außen ausgesetzt ist; und
    ein elastisches Glied, das im Tintenführungsloch des Spitzenkörpers eingeführt ist, wobei das elastische Glied einen Kugelanpressteil zum drücken der Kugel nach außen hat, dadurch gekennzeichnet, dass der Kugelanpressteil mit einer dreieckigen Form oder trapezförmig gebildet ist, wobei die dreieckige oder die Trapezform des Kugelanpressteils durch die doppelte Biegung des Kugelanpressteils an einem vorbestimmten Winkel verarbeitet wird.
  7. Der Spitzenmechanismus gemäß Anspruch 6, worin das elastische Glied einen Windungsabschnitt, einen geradlinigen Abschnitt und einen vertikal gebogenen Abschnitt umfasst, der den Windungsabschnitt und den geradlinigen Abschnitt miteinander verbindet, wobei der Kugelanpressteil am geradlinigen Abschnitt gebildet wird.
  8. Der Spitzenmechanismus gemäß Anspruch 7, worin sowohl der geradlinige Abschnitt als auch der vertikal gebogene Abschnitt jeweils an beiden Seiten des Windungsabschnitts gebildet werden.
EP99117434A 1999-05-25 1999-09-08 Spitzenmechanismus für Druckknopfschreibgeräte Expired - Lifetime EP1055523B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR9908991 1999-05-25
KR2019990008991U KR200287112Y1 (ko) 1999-05-25 1999-05-25 녹크식 수성 볼펜용 팁의 볼 압압구조

Publications (2)

Publication Number Publication Date
EP1055523A1 EP1055523A1 (de) 2000-11-29
EP1055523B1 true EP1055523B1 (de) 2003-07-09

Family

ID=54763279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99117434A Expired - Lifetime EP1055523B1 (de) 1999-05-25 1999-09-08 Spitzenmechanismus für Druckknopfschreibgeräte

Country Status (7)

Country Link
US (1) US6193429B1 (de)
EP (1) EP1055523B1 (de)
KR (1) KR200287112Y1 (de)
CN (1) CN1244458C (de)
AT (1) ATE244647T1 (de)
DE (1) DE69909438T2 (de)
TW (1) TW487650B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3393102B2 (ja) * 2000-02-17 2003-04-07 株式会社東京サインペン ボールペンのチップ
JP4101499B2 (ja) * 2001-10-31 2008-06-18 パイロットインキ株式会社 ボールペン
US20060115318A1 (en) * 2003-12-29 2006-06-01 Premec S.A. Ball-point pen with means of preventing inclination of the straight portion of the ball-pressing spring
EP2546071B1 (de) * 2010-03-08 2019-11-06 Mitsubishi Pencil Company, Limited Kugelschreiberspitze, kugelschreibernachfüllung und kugelschreiber
CN102310688B (zh) * 2011-08-23 2013-04-24 杭州大宇笔厂 气压式记号笔
US10155410B2 (en) * 2015-12-01 2018-12-18 Zebra Co., Ltd. Ballpoint pen chip and writing utensil equipped with the ballpoint pen chip
CN105584248A (zh) * 2016-03-15 2016-05-18 冯文达 弹性圆珠笔头
CN105751743A (zh) * 2016-05-12 2016-07-13 冯文达 弹性全针管圆珠笔头

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US554189A (en) * 1896-02-04 Ball fountain-pen
US1839160A (en) * 1927-10-18 1931-12-29 Jr John P Nissen Marking implement
FR967607A (fr) * 1948-05-22 1950-11-08 Distributeur de produits liquides, pâteux, solides ou pulvérulents
FR1071169A (fr) * 1951-10-27 1954-08-26 Distributeur d'adhésif
JPH046271A (ja) 1990-04-24 1992-01-10 Anelva Corp マルチカソードスパッタリング装置
JPH0425388A (ja) 1990-05-22 1992-01-29 Kobe Steel Ltd 産業用ロボットの位置検出装置
JPH0453782A (ja) 1990-06-22 1992-02-21 Fujitsu Ltd プリンタ装置
JPH0453781A (ja) 1990-06-22 1992-02-21 Fujitsu Ltd プリンタ装置の初期化方式
US5295396A (en) 1991-05-29 1994-03-22 Gilian Instrument Corporation Positive displacement piston flow meter for air flow measurement
JP3022644B2 (ja) 1991-08-09 2000-03-21 ティーディーケイ株式会社 有機質正特性サーミスタ
JPH06187464A (ja) 1992-08-18 1994-07-08 Iseki & Co Ltd 農業機械の管理システム
US5352804A (en) 1993-01-19 1994-10-04 Arizona Board Of Regents, A Body Corporate, Acting On Behalf Of Arizona State University Isolation and structure of Halistatin 2
JPH0798051A (ja) 1993-04-28 1995-04-11 Tochigi Fuji Ind Co Ltd デファレンシャル装置
JPH0720657A (ja) 1993-07-06 1995-01-24 Minolta Co Ltd 現像剤
WO1995015859A1 (fr) * 1993-12-06 1995-06-15 Mitsubishi Pencil Kabushiki Kaisha Stylo a bille
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WO1997044200A1 (fr) 1996-05-23 1997-11-27 Zebra Co., Ltd. Instrument d'ecriture

Also Published As

Publication number Publication date
DE69909438T2 (de) 2004-04-15
EP1055523A1 (de) 2000-11-29
CN1274651A (zh) 2000-11-29
US6193429B1 (en) 2001-02-27
TW487650B (en) 2002-05-21
DE69909438D1 (de) 2003-08-14
KR20000021297U (ko) 2000-12-26
CN1244458C (zh) 2006-03-08
KR200287112Y1 (ko) 2002-08-30
ATE244647T1 (de) 2003-07-15

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